Electrical connection for transformers and the like



Feb. 23 1926.

G. L.. CHAMBERLAIN ELECTRICAL CONNECTION FOR TRANSFORMERS AND THE LIKE 2 Sheets-Sheet Filed July 21, 1922 feb. 23 ,1926. 1,574,064

G. L. CHAMBERLiN.

ELECTRICAL CONNECTION FOR TRANSFORMERS AND THE LIKE Fild July 21, 1922 2 Sheets-Sheet 2 O I @4607 Wera/fz? f5. @61M f' @a Patented Feb. 23, 1925.

UNITED STATES GEORGE L. CHALVIBERLAIN, 0F CHICAGO, ILLINQIS.

ELECTRICAL CONNECTON FR TRANSFORMERS AND THE LIKE.

Application filed July 21, i822. Serial No. 576,564.

To all 107mm t may conce/m 13e it known that I, Gronau, L. CHAMBER- LMN, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of illinois, have invented certain new and useful lmprovements in Electrical Connections for Transformers and the like, of which the following is a specilication.

My invention relates to improvements in electrical connections for transformers and the like, and has for its object the provision of an improved electrical connection of this character which is of simple construction, e'cient in operation, and capable of ready shifting or adjustment to vary the output of the transformer.

Other objects will appear hereinafter.

rlhe invention consists in the combinations and arrangements of parts hereinafter described 'and claimed.

The invention will be best understood by reference to the accompanying drawings forming` a part of this specification, and in Which,

F ig. 1 is a longitudinal section of a transformer equipped with a connection embodying the invention;

Fig. 2 is an enlarged section taken on line 2-2 of Fig. 1;

Fig. 3, an enlarged section taken on line 3-3 Vof Fig. 1; and

F ig. 4L, a section taken on line i of Fig. 2.

The preferred form of construction as illustrated in the drawings comprises atransformer 5 of any usual or desired construction and enclosed in a metal casing 6 and supplied with current through the usual primary leads 7 as indicated. The transformer 5 is also provided with three wires or leads 8 leading to the secondary winding thereof for varying the output of the trans former in the usual way. Leads 8 are connected with three socket members 9 embedded in a base 10 of insulating material located at the inner end of a metallic tube 11 lea-ding into the casing 6 as shown. A tubeof insulating material 12 is arranged within the tube 11 and provided at one side with a longitudinal slot 13 as shown. A removable head llt is arranged to fit snugly within the tube 12, said head 14 being made of insulating material and in two separable parts secured together by means of a screw 15. The head 14 is provided with a lateral projection 1G to fit the groove 13 and whereby the association of the head 14 with the base 10 is compelled to be always in the same relation. The head carries two combined socket and plug members loosely inserted in openings l? in said head as indicated. The separable parts of the head 14 are each provided with three of the openings 17 grouped symmetrically about the central binding screw 15 and registering with each other. The combined socket and plug members, of which two are provided, fitsnugly through two of the openings in the lower part 14 and are provided at their upper ends with heads fitting corresponding recesses in the upper member 14. By this arrangement the combined socket and plug members may be readily arranged in any two of the openings 1T. Each of these combined socket and plug members is provided at its upper end with a socket 18 and at its lower end with a split plug 1S), the openings 17 being` arranged to register with the sockets 9 and whereby the plugs 19 will becaused to enter said sockets when the head is inserted in Jhe tube. Two secondary leads 20 are connected with the sockets 1S whereby said leads will be connected with the secondary winding of the transformer as will be readily unde-rstood. By this arrangement it will be observed that one of the secondary leads may be readily shifted to connect with another of the sockets 9 thus affording the output of the transformer. One of the leads 8 is connected with one end of the secondary winding of a transformer and the other leads 8 are connected at different portions thereof, so that the shifting of one of the members 18-19 will so change the connection with the transformer as to vary the output thereof, as will be readily understood by those skilled in this art.

rlhe secondary leads 2O are enclosed in the usual lead pipe 21 connected with the tube 11 by means of a detachable union 22 whereby the secondary leads will be readily removed for adjustment for output and the joint readily sealed when the adjustment has been made.

By this arrangement a simple and effective means is provided for varying the output of the transformer w iich may be readily adjusted by persons of companitively little skill or knowledge in the art.

Wlhile I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail myself of such variations and modiiications as come within the scope of the appended claims.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is:

l. An electrical connection comprising one member having three slip connections thereon; a cooperating member having three mountings thereon registering with the connections on said other member; two slip connections in said mountings and cooperatingl :ith the slip connections on said other member; means facilitating the shifting of one of said slip connections from one of said mountings into the said unoccupied mounting; and means compelling association of said members always in the relation, substantially as described.

2. An electrical connection comprising one block of insulating` material having three permanent slip sockets thereon; a cooperating block of insulating material having three mountings thereon registering with said sockets; two plugs arranged in two of said mountings; means facilitating the ready shifting of one of said plugs from one of said mountings intothe said unoccupied mounting; and means compelling` association of said members always in the same relation, substantially as described.

An electrical connector plug compris-v ing two separable. parts having three registering openings extending therethrough; two combined socket and plug members extending through one of said parts and projccting therefrom, the projecting ends con-- stituting plugs and there being sockets in theinner ends thereof; stop heads on the inner ends of said combined socket and plug members; a positioning projection projecting laterally from said connection; and i-.adily detachable means for securing the parts of said connection together, substantially as described.

4f. The combination of a casing, of a tube leading into said casing; a base at the inner end of said tube; three electric sockets mounted in said base; electrical connections leading from said sockets into said casing; a movable head fitting said tube; means compelling insertion of said head always in the same position; two plugs carried by said head and arranged to lit two of said sockets, one of said plugs being arranged to be readily adjusted to engage different of said sockets; and lead wires connected with said plugs, substantially as described.

The combination with a metallic casing, of a metallic tube leading into said casing; a b ase of insulating material at the inner end of said tube; three metallic electric sockets mounted in said base; a removable head of insulating material fitting into said tube; a liningl for said tube of insulating material, there being a longitudinal slot in said insulating lining; a projection on said head engaging said slot; and two plugs carred by said head and adapted to engage two of said sockets, one of said plugs being arranged to be readily adjusted to engage different of said sockets, substantially as described.

n testimony whereof I have signed my name to this specification.

GEORGE L. CHAMBERLAIN. 

